Senior Machine Learning Engineer, Ad Tech Engineering

Teamwork makes the stream work. Roku is changing how the world watches TV Roku is the #1 TV streaming platform in the U.S., Canada, and Mexico, and we've set our sights on powering every television in the world. Roku pioneered streaming to the TV. Our mission is to be the TV streaming platform that connects the entire TV ecosystem. We connect consumers to the content they love, enable content publishers to build and monetize large audiences, and provide advertisers unique capabilities to engage consumers. From your first day at Roku, you'll make a valuable - and valued - contribution. We're a fast-growing public company where no one is a bystander. We offer you the opportunity to delight millions of TV streamers around the world while gaining meaningful experience across a variety of disciplines. About Roku Roku is the leading TV streaming platform in the US, with a mission to connect the entire TV ecosystem by helping consumers discover content, enabling publishers to grow audiences, and giving advertisers powerful ways to engage viewers. About the Team The Ad Engineering team builds the platform behind Roku’s advertising business. Within Ad Engineering, the Creative Services team owns the infrastructure and tooling that helps advertisers produce, optimize, and deploy creatives at scale. About the Role We are hiring a Senior Engineer to lead the architecture and implementation of a next-generation generative AI-powered video creative platform. This is a high-impact role focused on building a self-serve product that makes high-quality video ad creation more accessible to advertisers. You will architect and build the end-to-end system for AI-powered video creative generation, from advertiser input through production output. You will work closely with ML, backend, frontend, and creative stakeholders to deliver a production-ready product that improves speed, quality, and scalability for video ad creation on Roku. What You’ll Do Define the technical architecture and overall stack for AI-powered video creative generation. Evaluate generative AI video models, LLMs, multimodal systems, and orchestration frameworks for product use. Design and build the pipeline from adv ertiser input to model inference, output validation, and integration with Roku creative APIs. Build production-grade systems with strong error handling, output validation, compliance, and brand safety guardrails. Partner cross-functionally with ML, backend, frontend, and creative teams to iterate quickly based on feedback and business needs.